Configure fails due to a dash ('-') in the compiler name when building HDF 4.2.6 or HDF 4.2.7

A user reported that on Ubuntu, building HDF 4.2.6 with Cygwin
took signficantly longer than building HDF 4.2r3. The user upgraded
his version of Cygwin to use GCC 4.5.0 (Cygwin 1.7.9) and the problem
disappeared.

Test Failures Reported When Building HDF 4.2r4 With jpeg-7

Test failures have been reported when building HDF 4.2r4 with jpeg-7.
The Independent JPEG Group began
providing jpeg-7 as of 27 June 2009. However, HDF 4.2r4 was tested
with and supports jpeg-6b.